/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cz.muni.fi.pa165.languageschoolweb.model;

import org.apache.wicket.Application;
import org.apache.wicket.model.AbstractReadOnlyModel;
import org.apache.wicket.request.cycle.RequestCycle;

/**
 * Model that displays whether a session was created yet, and if it was, prints the session id.
 *
 * @author Eelco Hillenius
 */
public class SessionModel extends AbstractReadOnlyModel<String>
{
    /**
     *
     */
    private static final long serialVersionUID = 1L;

    /**
     * @see org.apache.wicket.model.AbstractReadOnlyModel#getObject()
     */
    @Override
    public String getObject()
    {
        final String msg;
        String sessionId = Application.get()
            .getSessionStore()
            .getSessionId(RequestCycle.get().getRequest(), false);
        if (sessionId == null)
        {
            msg = "no concrete session is created yet (only a volatile one)";
        }
        else
        {
            msg = "a session exists for this client, with session id " + sessionId;
        }
        return msg;
    }

}